I cannot stress enough how good this game is! It's been in development for over 10 years, the finally released the last 4 chapters which happen on the alien world this Christmas (2019). The game stays pretty close to the original for the most part, except for these last chapters. They were not fun at all in HL1, and they have been changed quite a bit. It looks gorgeous, and is a lot more fun to play now! Half-life 1 is a tough act to follow, but the Black Mesa team did an awesome job. Well done!